001/*
002 * The MIT License
003 * Copyright (c) 2012 Microsoft Corporation
004 *
005 * Permission is hereby granted, free of charge, to any person obtaining a copy
006 * of this software and associated documentation files (the "Software"), to deal
007 * in the Software without restriction, including without limitation the rights
008 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
009 * copies of the Software, and to permit persons to whom the Software is
010 * furnished to do so, subject to the following conditions:
011 *
012 * The above copyright notice and this permission notice shall be included in
013 * all copies or substantial portions of the Software.
014 *
015 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
016 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
017 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
018 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
019 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
020 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
021 * THE SOFTWARE.
022 */
023
024package microsoft.exchange.webservices.data.misc;
025
026import microsoft.exchange.webservices.data.core.EwsUtilities;
027import org.apache.commons.codec.binary.Base64;
028
029import java.util.Date;
030import java.util.UUID;
031
032/**
033 * Class with re-usable function implementations.
034 */
035
036public final class IFunctions {
037
038  private IFunctions() {
039    throw new UnsupportedOperationException();
040  }
041
042  public static class ToString implements IFunction<Object, String> {
043    public static final ToString INSTANCE = new ToString();
044
045    public String func(final Object o) {
046      return String.valueOf(o);
047    }
048  }
049
050  public static class ToBoolean implements IFunction<String, Object> {
051    public static final ToBoolean INSTANCE = new ToBoolean();
052
053    public Boolean func(final String s) {
054      return Boolean.parseBoolean(s);
055    }
056  }
057
058  public static class StringToObject implements IFunction<String, Object> {
059    public static final StringToObject INSTANCE = new StringToObject();
060
061    public Object func(final String o) {
062      return o;
063    }
064  }
065
066  public static class ToUUID implements IFunction<String, Object> {
067    public static final ToUUID INSTANCE = new ToUUID();
068
069    public Object func(final String s) {
070      return UUID.fromString(s);
071    }
072  }
073
074  public static class Base64Decoder implements IFunction<String, Object> {
075    public static final Base64Decoder INSTANCE = new Base64Decoder();
076
077    public Object func(final String s) {
078      return Base64.decodeBase64(s);
079    }
080  }
081
082  public static class Base64Encoder implements IFunction<Object, String> {
083    public static final Base64Encoder INSTANCE = new Base64Encoder();
084
085    public String func(final Object o) {
086      return Base64.encodeBase64String((byte[]) o);
087    }
088  }
089
090  public static class ToLowerCase implements IFunction<Object, String> {
091    public static final ToLowerCase INSTANCE = new ToLowerCase();
092
093    public String func(final Object o) {
094      return o == null ? null : o.toString().toLowerCase();
095    }
096  }
097
098  public static class DateTimeToXSDateTime implements IFunction<Object, String> {
099    public static final DateTimeToXSDateTime INSTANCE = new DateTimeToXSDateTime();
100
101    public String func(final Object o) {
102      return EwsUtilities.dateTimeToXSDateTime((Date) o);
103    }
104  }
105
106}